Champlain Bridge Advances - page 2 of 5
The contractor has already completed construction of the west jetty at the northeast tip of L’Île-des-Sœurs.
This massive jetty, 500 metres x 100 metres, will be the main access route to the new Champlain Bridge construction site. Quantity of rocks needed to build the jetty exceeds 447,000 tons
The jetty will be used to set up a precast yard for concrete foundation and pier cap parts that are too heavy to be transported by road, as well as a steel parts assembly area.
It will also be used to dock vessels transporting components to their installation sites.
An important aspect is that it enables “dry bed” construction of the western portion of the new bridge.
Jetty for the cable-stayed portion
Currently under construction, this jetty will abut the St. Lawrence Seaway dyke on the river side, to the west of the Seaway. It will measure 200 metres x 250 metres and require 350,000 tons of rock.
This jetty will serve as a work area for the cable-stayed portion of the bridge.
East jetty (Brossard)
Measuring 425 metres x 96 metres and using 155,000 tons of rock, this jetty will enable “dry bed” construction of the eastern portion of the new Champlain Bridge.
Two smaller jetties support construction of the new Île-des-Sœurs bridge. One was constructed toward the end of 2015. The other will be built in the 3rd quarter of 2016.
The three jetties consist of temporary works. At the end of the project, 42 piles were drilled between October and December 2015, to begin the work on the foundation of the main pylon.
Since January, the contractors have been working on the forms for the two footings of the main pylon, to prepare for the concreting operations that will begin shortly.
The installation of the rebar inside the footings is going well, and the first footing, for the south side, were poured in early April. The concrete for the second footing, for the north side, was poured a week later.
Each concreting operation took from 10 to 15 hours and required about 1000 m³ of concrete. At the same time, a pier base was cast in place, to attach other concrete sections that were coming from a supplier in the Drummondville area.
The four foundations for the two pillars to the west of the main pylon, pillars W01 and W02, have also been poured. Coffer dams made of sheet piles are being installed as the excavation work advances.